haha well i do not own it, but i have used it MULTIPLE MULTIPLE times, almost to the point where i should own it. pretty sure im going to buy it soon becuase i found out of this awesome deal that i can get on vista ultimate, and i would tell you but you would be jealous. lol onto the main point. for the multiple times i have used vista i have not had any problems, and now with it runnin SP1 its even smoother. Yes there is the security alerts but like Wally said, those can easily be fixed.